Title:
撮像用の光学系および撮像装置
Document Type and Number:
Japanese Patent JP6830645
Kind Code:
B2
Abstract:
An optical system (10) for capturing image is provided. The optical system consists of a first lens group (G1) with positive refractive power disposed on an object side (11) with respect to an aperture stop (St) and a second lens group (G2) with negative refractive power disposed on an image plane side (12) with respect to the aperture stop (St). The first lens group (G1) includes, in order from the object side (11), a first sub group (G11) with negative refractive power and a second sub group (G12) with positive refractive power, and the second lens group (G2) includes a third sub group (G21), which includes at least one lens with negative refractive power and at least one lens with positive refractive power, a penultimate positive lens (L10) with positive refractive power, and a final negative meniscus lens (L11).
Inventors:
Akira Sawamoto
Application Number:
JP2016181654A
Publication Date:
February 17, 2021
Filing Date:
September 16, 2016
Export Citation:
Assignee:
Nittoh corporation
International Classes:
G02B13/04; G02B13/18
Domestic Patent References:
| JP63241511A | ||||
| JP7152002A | ||||
| JP2013231941A | ||||
| JP8029688A | ||||
| JP2006178244A | ||||
| JP6214156A | ||||
| JP8062499A | ||||
| JP63139314A | ||||
| JP2001290076A | ||||
| JP5313065A | ||||
| JP6300972A |
Attorney, Agent or Firm:
Akira Imai